ArticleNature communications2025
Sonication-induced J-aggregation in nonhalogenated solvents boosts exciton delocalization for high-efficiency organic solar cells.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Chalcogen heteroatom engineering of solid additives with optimized excited-state properties enables the development of high-performance organic solar cells.Chemical science · 2026Article
- Synergistic Steric Hindrance and Chlorination Enable Efficient Binary Organic Solar Cells with Low Energy Loss.Nature communications · 2026Article
- Aromatic Connectivity Governs Aggregation and Morphology in Ternary Organic Solar Cells.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
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21 authors.
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Abstract
The commercialization of organic solar cells (OSCs) requires eliminating halogenated solvents. However, the disordered molecular aggregation of nonfullerene acceptors (NFAs) in nonhalogenated solvents hinders achieving high power conversion efficiencies (PCEs). Herein, this problem is addressed using an external physical field modulation strategy involving the sonication of NFA solutions to induce a transformation from disordered molecular aggregation to ordered J-aggregation via microstreaming and shear stress. The aggregation is effectively preserved within films, enhancing π-π stacking interactions. Moreover, sonication promotes the conversion of localized excitons to intra-moiety delocalized excitons and suppresses molecular vibrations. The PCEs of PM6:L8-BO-based binary and ternary devices fabricated using o-xylene are 19.43% and 20.41% (certified 19.84%), ranking among the highest values reported for nonhalogenated solvent-processed OSCs. The binary devices also exhibit high thermal stabilities (T
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